package JZ14_链表中倒数最后k个结点;

class ListNode {
    int val;
    ListNode next = null;
    public ListNode(int val) {
      this.val = val;
    }
 }

public class Solution {
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     *
     * @param pHead ListNode类
     * @param k int整型
     * @return ListNode类
     */
    public ListNode FindKthToTail (ListNode pHead, int k) {
        // write code here
        ListNode last = pHead;
        ListNode cur = pHead;


        for (int i = 0; i < k; i++){
            if (last == null){
                return null;
            }
            last = last.next;

        }
        while (last != null){
            last = last.next;
            cur = cur.next;
        }

        return cur;
    }
}